Struct GpuPrecondCsr 

pub struct GpuPrecondCsr {
    pub nrows: usize,
    pub ncols: usize,
    pub row_ptr: Vec<usize>,
    pub col_idx: Vec<usize>,
    pub values: Vec<f64>,
}

Sparse matrix in CSR format (row-major compressed), f64 values only.

This is a lightweight internal type used by the GPU preconditioner. For the general sparse matrix API use crate::csr::CsrMatrix.

Fields

nrows: usize

Number of rows.

ncols: usize

Number of columns.

row_ptr: Vec<usize>

Row pointers: row_ptr[i]..row_ptr[i+1] indexes row i.

col_idx: Vec<usize>

Column indices of non-zeros.

values: Vec<f64>

Non-zero values.

Implementations

impl GpuPrecondCsr

pub fn new( nrows: usize, ncols: usize, row_ptr: Vec<usize>, col_idx: Vec<usize>, values: Vec<f64>, ) -> Self

Create from raw CSR data.

pub fn from_dense(dense: &Array2<f64>) -> Self

Create from a dense ndarray::Array2<f64> (useful for testing).

pub fn spmv(&self, x: &Array1<f64>) -> Array1<f64>

Sparse matrix-vector product y = A * x.

pub fn nnz(&self) -> usize

Number of non-zeros.

Trait Implementations

impl Clone for GpuPrecondCsr

fn clone(&self) -> GpuPrecondCsr

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GpuPrecondCsr

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.